Cap for collapsible tubes



Aug. 10 ,1926. 1,595,187 I J. GRAYSQN' CAP FOR COLLAPSIBLE TUBES Filed August 1 1925 was 9 M N VEN TOR 2 ATTOREYS.

Patented Aug. 10, 1926.

UNITED STATES JOHN H. GRAYSON, OF ATHENS, OHIO.

CAP FOR COLLAI'SIBLE TUBES.

Application filed August This invention relates to collapsible tubes of the type used as containers for paste or the like, and more particularly to a cap therefor.

It is the general object of the invention to provide a cap for collapsible tubes, which is quickly detached and attached.

It is a more particular object to provide a. cap of the character referred to, which does not require a special tube construction.

Another particular object is a collapsible tube of the usual construction provided with a cap that may be quickly attached and detached and is cheap to manufacture.

For a full disclosure reference is made to the accompanying drawings, wherein Fig. 1 is a fragmentary side elevation of a tube embodying the invention, the cap being shown in position to close the outlet of the tube;

Fig. 2 is a similar view showing the cap 1n inoperative position; and

Fig. 3 is a fragmentary section of the 1nvention as shown in Fig. 1.

In the drawings, 1 represents a collapsible tube made of tin, as is 'the usual practice and as is required by law. A cap 2 has depending lugs 3 affording the formationof slots 4 terminating at their upper ends in slots 5 extending at right angle thereto. The slots co-operate with pinjou-rnals extending from opposite sides of the neck portion of the tube. The arrangement described forms what is generally known as a bayonet oint. The lower. edge of the'horizontal slots 5 is slightly inclined to act as a cam edge, as 1s well understood. 4

The construction thus far described relates to mechanism which is in itself well known and generally applied in various arts.

The invention is the combination of a collapsible tube of ordinary construction with a cap of the type described and, more in particular, that part of the construction that makes it possible to cheaply apply the particular form of closure.

The journals above referred to are defined by a pin 6 preferably of steel, bronze or the like, which extends through the neck and projects from opposite sides thereof. hile it is not material how and at what stage the openings are formed in the neck for receiving the pin, I prefer to cast the neck with the holes in it.

Although I consider a plain pin extend- 1, 1925. Serial No. 47,575.

ing through the neck as the cheapest and best solution of the particular problem, the journals may be formed by pin portions extending generally from the interior of the neck through the walls thereof, but given a balanced bearing in other ways. The important point is the provision of journal pins so constructed and attached that the thin walls of tin need not be strengthened or reinforced or that no special construction is required for the neck or that no special expensive connection is required between. the pins and the metal of the neck.

The construction specifically referred to affords a balanced bearing, eliminates or at least greatly reduces lever action of the journals relatively to .thewall of the neck and thus insures operativeness of the cap for the time that the tube is in use.

By the invention, the walls of the tube may be made as thin as is practically feasible and, as tin is fairly expensive, the invention permits the highest degree of economy in this respect.

The cap may be a simple stamping from a suitable metal. The relatively soft metal of the tube makes a practically. air-tight seal possible, since it readily conforms to the harder metal seat in the cap. However, a small cork disk may be inserted in the cap, if desired. I preferably form the mouth of thetube and the seat in the cap as indicated in Fig. 3. The beveled edge 7 of the mouth and the corresponding beveled circular portion 8 on the cap co-operate to form an effective seal. If desired, the neck portion above the pin 6 may be internally sufliciently constricted to cause the material, which is forced to pass around the pin, to reunite and pass out of the mouth as a single ribbon. However, this feature is purely collateral and from the standpoint of novelty of secondary importance.

In the foregoing I have described what I consider as the best and preferred form for carrying out the invention, having particularly in mind the importance of a low price of production.

I claim 1. A collapsible tube having a body portion and a neck portion defined by a relatively thin wall and a closure, including an integral member extending through the neck and providing journals, and a cap member pivoted on the said journals.

2. A collapsible tube having a body por tion and a neck portion defined by a relatively thin wall and a closure, including a pin extending through the neck portion and 5 providing journals on the exterior thereof, and a cap member pivoted on said journals.

3. In combination With a collapsible tube having a body portion and a neck portion, a pin extending through the neck'portion and 10 providing journals on the exterior thereof,

and a cap having depending lu' s afiording bayonet slots eo-operating wlth t e journals.

4. In combination with a. collapsible tube having a body portion and a neck portion, a pin extending through the neck portion and 15 providing journals on the exterior thereof.

In testimony whereof, I afiix my signature.

JOHN H. GRAYSON. 

